Analysis
- max time kernel
151s - max time network
144s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system - submitted
20/03/2023, 10:59
Static task
static1
Behavioral task
behavioral1
Sample
setup.exe
Resource
win7-20230220-en
windows7-x64
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
setup.exe
Resource
win10v2004-20230220-en
windows10-2004-x64
10 signatures
150 seconds
General
- Target setup.exe
- Size 176KB
- Sample230320-m3d56ada92
- SHA256 5b634f1abd50a31dcfde44b52e1e83aab0656451f5dfdf098b989a0c21dae8a7
- MD5 273b91e83ca2c77bfa6b231dca2a71b6
- SHA1 4cc8b4387da6482f1ddab84a9883a37c95244e9e
- SHA512 f905aaf9293a9b72931ddf1d8cf77ac6aa0ecbd627fbcad8c02b1207949c7ced432cdfe32957ea0ec96d3cec5987cd246093c02739397768d210bca379037656
- SSDEEP 1536:GA2y7Ev4Fc7gdloRxIieX1PO4dzJfwvFyLZplVJGKks+gTkb8RJqTKxm0wZ1vMFB:GAUORowXE0zO9IbV5+T8RS1ZR6T9H
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Extracted
Family
-
smokeloader
Botnet
-
lab
Extracted
Family
-
smokeloader
Version
-
2020
C2
-
http://host-file-host6.com/
-
http://host-host-file8.com/
rc4.i32
rc4.i32
Signatures
- SmokeLoader
Modular backdoor trojan in use since 2014.
- Executes dropped EXE 2 IoCs
pid Process 1152 cgwurcd 4692 cgwurcd - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 4608 set thread context of 5088 4608 setup.exe 86 PID 1152 set thread context of 4692 1152 cgwurcd 99 - Checks SCSI registry key(s) 3 TTPs 6 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI setup.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI setup.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI cgwurcd Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI cgwurcd Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI cgwurcd Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI setup.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 5088 setup.exe 5088 setup.exe 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found 3220 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3220 Process not Found - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 5088 setup.exe 4692 cgwurcd - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeShutdownPrivilege 3220 Process not Found Token: SeCreatePagefilePrivilege 3220 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 4608 wrote to memory of 5088 4608 setup.exe 86 PID 4608 wrote to memory of 5088 4608 setup.exe 86 PID 4608 wrote to memory of 5088 4608 setup.exe 86 PID 4608 wrote to memory of 5088 4608 setup.exe 86 PID 4608 wrote to memory of 5088 4608 setup.exe 86 PID 4608 wrote to memory of 5088 4608 setup.exe 86 PID 1152 wrote to memory of 4692 1152 cgwurcd 99 PID 1152 wrote to memory of 4692 1152 cgwurcd 99 PID 1152 wrote to memory of 4692 1152 cgwurcd 99 PID 1152 wrote to memory of 4692 1152 cgwurcd 99 PID 1152 wrote to memory of 4692 1152 cgwurcd 99 PID 1152 wrote to memory of 4692 1152 cgwurcd 99 - Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
-
C:\Users\Admin\AppData\Local\Temp\setup.exe"C:\Users\Admin\AppData\Local\Temp\setup.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4608 -
C:\Users\Admin\AppData\Local\Temp\setup.exe"C:\Users\Admin\AppData\Local\Temp\setup.exe"2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:5088
-
-
C:\Users\Admin\AppData\Roaming\cgwurcdC:\Users\Admin\AppData\Roaming\cgwurcd1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1152 -
C:\Users\Admin\AppData\Roaming\cgwurcdC:\Users\Admin\AppData\Roaming\cgwurcd2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:4692
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\cgwurcd
- Size 176KB
- SHA256 5b634f1abd50a31dcfde44b52e1e83aab0656451f5dfdf098b989a0c21dae8a7
- MD5 273b91e83ca2c77bfa6b231dca2a71b6
- SHA1 4cc8b4387da6482f1ddab84a9883a37c95244e9e
- SHA512 f905aaf9293a9b72931ddf1d8cf77ac6aa0ecbd627fbcad8c02b1207949c7ced432cdfe32957ea0ec96d3cec5987cd246093c02739397768d210bca379037656
- SSDEEP 1536:GA2y7Ev4Fc7gdloRxIieX1PO4dzJfwvFyLZplVJGKks+gTkb8RJqTKxm0wZ1vMFB:GAUORowXE0zO9IbV5+T8RS1ZR6T9H
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\cgwurcd
- Size 176KB
- SHA256 5b634f1abd50a31dcfde44b52e1e83aab0656451f5dfdf098b989a0c21dae8a7
- MD5 273b91e83ca2c77bfa6b231dca2a71b6
- SHA1 4cc8b4387da6482f1ddab84a9883a37c95244e9e
- SHA512 f905aaf9293a9b72931ddf1d8cf77ac6aa0ecbd627fbcad8c02b1207949c7ced432cdfe32957ea0ec96d3cec5987cd246093c02739397768d210bca379037656
- SSDEEP 1536:GA2y7Ev4Fc7gdloRxIieX1PO4dzJfwvFyLZplVJGKks+gTkb8RJqTKxm0wZ1vMFB:GAUORowXE0zO9IbV5+T8RS1ZR6T9H
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\cgwurcd
- Size 176KB
- SHA256 5b634f1abd50a31dcfde44b52e1e83aab0656451f5dfdf098b989a0c21dae8a7
- MD5 273b91e83ca2c77bfa6b231dca2a71b6
- SHA1 4cc8b4387da6482f1ddab84a9883a37c95244e9e
- SHA512 f905aaf9293a9b72931ddf1d8cf77ac6aa0ecbd627fbcad8c02b1207949c7ced432cdfe32957ea0ec96d3cec5987cd246093c02739397768d210bca379037656
- SSDEEP 1536:GA2y7Ev4Fc7gdloRxIieX1PO4dzJfwvFyLZplVJGKks+gTkb8RJqTKxm0wZ1vMFB:GAUORowXE0zO9IbV5+T8RS1ZR6T9H
- MD5 SHA1 SHA512 SSDEEP